Discrete SPS Control of a DAB converter using partial Feedback Linearization

This article presents the design and evaluation of a discrete non-linear controller with bilinear approximation to regulate the output voltage of a Dual Active Bridge (DAB) converter under parametric uncertainties. In this paper we consider the possible uncertainties in the system, such as variations in load and input voltage. The drive is controlled by single phase shift modulation (SPS) with a fixed duty cycle. The discrete controller developed ensures disturbance rejection, reference tracking and zero overshoot, with a small transient regime. The results obtained through the Typhoon HIL are presented to validate the effectiveness of the developed controller.